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Dean,<br>
<br>
Because the inexpensive monitors are for LOW PM concentrations, that
is an advantage when we are working on very clean stoves. The
other stoves (with moderate to high PM output) can be easily
recognized by odors, visible smoke, watery eyes, and probably other
ways. But the quite clean stoves should not foul-up these devices.<br>
<br>
Imagine a stove testing set-up for "pocket change" costs by having a
CO detector with digital readout, a PM detector with digital
readout, plus reasonable scales and thermometers. This would be a
great topic for someone to study. <br>
<br>
This is beyond my abilities of time and talent, but I (and probably
others, who are requested to identify themselves to the Listserv or
to me privately) might help sponsor someone to do this work. If
interested, please discuss on this Listserv and then we can shift to
private email after the general issues have been identified. <br>
<br>
Paul<br>
<pre class="moz-signature" cols="72">Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: <a class="moz-txt-link-abbreviated" href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a>
Skype: paultlud Phone: +1-309-452-7072
Website: <a class="moz-txt-link-abbreviated" href="http://www.drtlud.com">www.drtlud.com</a></pre>
<div class="moz-cite-prefix">On 6/11/2015 11:31 AM, Dean Still
wrote:<br>
</div>
<blockquote
cite="mid:CA+tShZs6-uE=cXOp-U7ARNUWXmSOfrran1iWrqsPVr__CO8xfA@mail.gmail.com"
type="cite">
<div dir="ltr">Hi Paul,
<div><br>
</div>
<div>The three we have give numbers and some have data loggers.
As Kirk points out, these monitors are intended for room air
at low PM concentrations but some do have good quality sensors
so it is interesting to see if they could be helpful as a
stove development tool. We use our IAP meter in that way in
the Test Kitchen with regulated air exchanges and we also use
a fan to suck room air into a box.</div>
<div><br>
</div>
<div>We'll explain and explore at Stove Camp if folks are
interested.</div>
<div><br>
</div>
<div>Best,</div>
<div><br>
</div>
<div>Dean</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Jun 11, 2015 at 9:04 AM, Paul
Anderson <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:psanders@ilstu.edu" target="_blank">psanders@ilstu.edu</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> Dean or Christina or
anyone,<br>
<br>
Are the PM sensors just sounding an alarm (like simple
smoke detectors) or are they giving any readouts of actual
numbers? Even if not calibrated to exact standards,
seeing the numbers can be of great help. There are CO
detectors that are alarm only and some that give readouts.<br>
<br>
Paul<br>
<pre cols="72">Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: <a moz-do-not-send="true" href="mailto:psanders@ilstu.edu" target="_blank">psanders@ilstu.edu</a>
Skype: paultlud Phone: <a moz-do-not-send="true" href="tel:%2B1-309-452-7072" value="+13094527072" target="_blank">+1-309-452-7072</a>
Website: <a moz-do-not-send="true" href="http://www.drtlud.com" target="_blank">www.drtlud.com</a></pre>
<div>On 6/11/2015 10:07 AM, Dean Still wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hi Paul,
<div><br>
</div>
<div>We have three PM sensors here at the lab (under
$100) from China and are interested in quantifying
their performance. The Test Kitchen is set up and we
can try some experiments at Stove Camp for those
interested.</div>
<div><br>
</div>
<div>Best,</div>
<div><br>
</div>
<div>Dean</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Jun 11, 2015 at 6:47
AM, Paul Anderson <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:psanders@ilstu.edu" target="_blank">psanders@ilstu.edu</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> Stovers,<br>
<br>
WONDERFUL!!! Now this Listserv is really
working together!! So summary of comments and
thoughts thus far:<br>
<br>
1. MOST of us were almost unaware of the
existence of Speck, and we find out (thanks
Christina) that there are many such types of
units.<br>
<br>
2. But being inexpensive, they have issues of
quality of the data. Evidently not of
sufficient quality for the HEALTH STUDIES
requirements of Kirk Smith and his crew.<br>
<br>
3. But for those of us in the "trenches" trying
to understand how to improve the stoves, these
small detectors of PM could be of great
assistance. If only to be able to detect
whether the emissions are improving or worsening
would be useful for a stove designer to make
comparisons between one stove with two different
variations.<br>
<br>
4. These smaller PM measurement devices have
not yet entered into the activities of Aprovecho
(as developer of high precision instruments) and
therefore have not been part of Aprovecho
activities for Stove Camps where the inexpensive
instruments might be of great interest. <br>
<br>
5. Will these PM sensors be part of Stove
Camps? Or when? I do not have any such
sensors, and I am not intending to attend the
Aprovecho Stove Camp in July (27 to 31, I
believe). Dean and crew or some attendee might
arrange to have the PM sensors by then.<br>
<br>
But there is another Stove Camp early next month
(9 - 10 July) in Ontario, Canada, headed by
Crispin PP and Julien Winter and hosting
assistance by Alex English. The focus will be
on the RELATIVELY LOW COST emissions testing
equipment (and procedures) that Crispin knows so
well. If you are not familiar with such
equipment or want further information and
hands-on experience, consider attending.
Information about this Stove Camp about Testing
is available from Julien, who I ask to re-post
to the Stoves Listserv the contact information
and details / agenda (with a new Subject
line). So, perhaps further discussion
about the inexpensive PM measurement devices
will be included at that event.<br>
<br>
Paul<br>
<pre cols="72">Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: <a moz-do-not-send="true" href="mailto:psanders@ilstu.edu" target="_blank">psanders@ilstu.edu</a>
Skype: paultlud Phone: <a moz-do-not-send="true" href="tel:%2B1-309-452-7072" value="+13094527072" target="_blank">+1-309-452-7072</a>
Website: <a moz-do-not-send="true" href="http://www.drtlud.com" target="_blank">www.drtlud.com</a></pre>
<div>On 6/10/2015 6:09 PM, Christina Espinosa
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">I asked Kirk Smith if he had
used this one before and here is his
response regarding these type of PM devices
for the home from tests they have run:<br>
<br>
<span style="color:rgb(0,0,255)">"There a
number of PM devices on the market now
designed for general consumers -- at least
a dozen in China alone. plus some here.
We have evaluated several and are doing
another batch here soon at our lab in
Richmond. So far, none has the
combination we want of <br>
<br>
-- precise and stable enough readings<br>
--small and light enough for personal
monitoring<br>
--ease in zeroing and calibrating<br>
--high enough upper limit -- they
typically stop at 1 mg/me or lower<br>
--ease in cleaning -- necessary for our
environments or even in dirty Asian cities<br>
--reasonable battery life<br>
--easy datalogging, downloading, etc<br>
<br>
Our UCB-PATs+ does meet these criteria and
is now undergoing field trials. (We are
also flying it on our aerial particle
monitor (drone) in India.) Would not
expect it to be commercially available
(from BA) until early next year, however."</span><br>
<br>
<br>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Jun 10,
2015 at 4:22 PM, Roberto Poehlmann <span
dir="ltr"><<a
moz-do-not-send="true"
href="mailto:roberto.poehlmann@gmail.com"
target="_blank">roberto.poehlmann@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div dir="ltr">
<div>Paul,</div>
<div><br>
</div>
<div>i found this links about
specksensor, with experiments
results:</div>
<div><br>
</div>
<div><a moz-do-not-send="true"
href="http://publiclab.org/notes/chrisbartley/04-15-2014/speck-particle-monitor"
target="_blank">http://publiclab.org/notes/chrisbartley/04-15-2014/speck-particle-monitor</a><br>
</div>
<div><br>
</div>
<div>This is another monitor of PM:<br>
</div>
<div><a moz-do-not-send="true"
href="http://www.dylosproducts.com/ornodcairqum.html"
target="_blank">http://www.dylosproducts.com/ornodcairqum.html</a><br>
</div>
<div><br>
</div>
<div>..and another:</div>
<div><a moz-do-not-send="true"
href="http://aircasting.org/"
target="_blank">http://aircasting.org/</a><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>Arduino:</div>
<div><br>
</div>
<div>In the world of Arduino, you
can DIY your own PM device, like
this (Dustduino):</div>
<div><a moz-do-not-send="true"
href="http://publiclab.org/notes/Schroyer/11-23-2013/measure-coarse-and-fine-air-particulates-with-a-dustduino"
target="_blank">http://publiclab.org/notes/Schroyer/11-23-2013/measure-coarse-and-fine-air-particulates-with-a-dustduino</a><br>
</div>
<div><br>
</div>
<div>It uses the sensor Shinyei
PPD-42 Dust Sensor (<a
moz-do-not-send="true"
href="http://www.seeedstudio.com/depot/grove-dust-sensor-p-1050.html"
target="_blank">http://www.seeedstudio.com/depot/grove-dust-sensor-p-1050.html</a>)</div>
<div><br>
</div>
<div>This is a experiment to compare
this Japan sensor with a similar
Korean Sensor, <a
moz-do-not-send="true"
href="http://aqicn.org/sensor/shinyei/"
target="_blank">http://aqicn.org/sensor/shinyei/</a></div>
<div><br>
</div>
<div>It says that "There are many
affordable and low-cost air
particule sensor. The most famous
one is definitely the Japanese
Shinyei sensor, with a cost of
around 75 CNY (12 USD)"</div>
<div><br>
</div>
<div><br>
</div>
<div>This is another DIY monitor
with arduino:<br>
</div>
<div><a moz-do-not-send="true"
href="http://www.instructables.com/id/Make-one-PM25-monitor-with-Arduino-UNO/"
target="_blank">http://www.instructables.com/id/Make-one-PM25-monitor-with-Arduino-UNO/</a><br>
</div>
<div><br>
</div>
<div>It uses the sensor SDS011 (link
<a moz-do-not-send="true"
href="http://inovafitness.com/product-35.html"
target="_blank">http://inovafitness.com/product-35.html</a>).</div>
<div><br>
</div>
<div><br>
</div>
<div>Finally, i found this document,
that describe various sensors and
describe how it works.</div>
<div><a moz-do-not-send="true"
href="http://www.teco.edu/%7Ebudde/publications/inss2012_budde.pdf"
target="_blank">http://www.teco.edu/~budde/publications/inss2012_budde.pdf</a><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>I have now two Arduinos, and i
will make (some day) my own
datalogger (temp, PM, CO, oxygen,
etc.). The sensors for Arduino's
are not to expensive, and in
Internet exists a lot of examples
of this type of devices.</div>
<div><br>
</div>
<div>This is, for example, a
dalalogger made with Arduino:</div>
<div><br>
</div>
<div><a moz-do-not-send="true"
href="http://www.instructables.com/id/Arduino-Temp-Logger/"
target="_blank">http://www.instructables.com/id/Arduino-Temp-Logger/</a><br>
</div>
<div><a moz-do-not-send="true"
href="https://blog.adafruit.com/2010/09/07/a-thermocouple-datalogger-based-on-the-arduino-platform/"
target="_blank">https://blog.adafruit.com/2010/09/07/a-thermocouple-datalogger-based-on-the-arduino-platform/</a><br>
</div>
<div><br>
</div>
<div>
<div>Cheers<span><font
color="#888888"><br>
Roberto</font></span></div>
</div>
</div>
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<br clear="all">
<br>
-- <br>
<div>Christina Espinosa<br>
University of the Pacific '10<br>
School of International Studies<br>
<a moz-do-not-send="true"
href="mailto:c_espinosa1@u.pacific.edu"
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